Ear-trumpet



(No Model.)

' A. MACDONALD.

BAR TRUMPET.

No. 269,078. Patented Dec. 12, 1882.

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UNITED STATES ANGUS MACDONALD, OF BOSTON, MASSACHUSETTS.

EAR-TRU M PET.

SPECIFICATION forming part of Letters Patent No. 269,078, dated December 12, 1882,

Application filed January 31, 1882. (No model.)

To all whom it may concern Be it known that I, ANGUS lVIACDONAL'D, M. D.,ofBoston,.in the countyot' Suffolk and State of Massachuset s, have invented certain Improvements in Ear-Trumpets, of which the following is a specification.

This invention consists in an ear-trumpet formed to rest upon the top of the head, so that the trumpet will receive equally well soundwaves from both sides, and can be worn constantly, and covered, when not in use, by the hat or other head-covering, the eflect of the trumpet as an aid to hearing being increased by its contact with the top of the head.

Of the accompanying drawings, forming a part of this specification, Figure 1 represents a perspective view of an ear-trumpet embodying my invention, showing the same in place on the head. Fig. 2 represents a front elevation of the same; Fig. 3 represents a section on line .10 00, Fig. 2. Fig. 4 shows the chamber provided with two conducting-tnbesone for each ear.

The same letters of reference indicate the same parts in all the figures.

In carrying out my invention I construct an ear-trumpet in such form that a portion of its sound-receiving chamber A can rest in close contact with the top of the head, as shown in Fig. 1. To this end one side of the sound-receiving chamber is curved to fit the curvature of the portion of the head on which the chamber is to rest. The conducting-tube B is arranged to lead from the chamberA to the ear, and is provided with a swiveled end or elbow, C, said elbow being preferably provided with a rubber terminal, D, to enter the outer portion of the ear. By locating the chamber A upon the top of the head, as shown, the.person can keep the trumpet always in position for use, and it can receive equally well sounds from both sides, and can be covered, when not in use, by the hat or other head-coverin z When worn by a lady the hair or bonnet can be arranged to cover the chamber without preventing the sound-vibrations from entering.

I have found that when the sound-receiving chamber is in contact with the top of the head the efl'ect ot' the trumpet as an aid to hearing is considerably increased, so that deat' persons can hear much more distinctly than with the ordinary ea trumpet, the soundreceiving chamber of which is distant from the head. The contact of the chamber with the head e11- ables the chamber to be made of less than the usual size, and its location on the top of the head causes its weight to keep it in place wholly or in part, and also enables two tubes to be connected to a single chamberone for each ear.

The conducting-tube B may be made of rubber,it' desired, and is in position to be concealed by the bonnet-strings when worn by a lady.

The chamber A may be provided with means for securing it to the hair, and to this end may be provided with comb-teeth t, as shown in Fig. 2.

It will be seen that the trumpet formed as described is much more convenient than the ordinary form, since it does not require to be held in the hand, and when secured to the hair is always in place.

I claim An ear-trumpet having a single central divided sount'l-receiving chamber formed to rest upon the top of the head, with a conductingtube leading from said chamber to the ears, and provided with a comb integral therewith for holding the instrument in place.

In testimony whereot'I have signed my name to this specification, in the presence oftwo subscribing witnesses, this 2Sth' day of January, 1882.

ANGUS MACDONALD.

Witnesses:

O. F. BROWN, A. L. WHITE. 

